Hello! Thanks so much for trying out our game 😍 and for the feedback!
Unfortunately, when we built the game we forgot to check the show cursor button so you have to tab to use the Host and Connect buttons. (and then didn't have time to re-build before submitting! 🙃)
And yes! PvP and the gun is doable through the Host/Connect buttons but only with a player on the same Network as you. Server Multiplayer was out of scope for the time we had to make this though definitely something we will explore in the future to make this feature more accessible!
The gun only becomes active once the build timer runs out in multiplayer mode. You have 60seconds to build a base/fortress and then when the middle wall falls the gun becomes active and then the shooting begins! But perhaps it might be better if you can use the gun before connecting also!
Building on multiple levels was a stretch goal of ours that unfortunately we didn't meet... but definitely something we wanted to do!
Thanks again for giving it a go!! 🥰